package com.atguigu.gulimall.order.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import javax.xml.ws.Service;

@Configuration
public class GuliFeignConfig {
    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor(){
        return new RequestInterceptor(){

            @Override
            public void apply(RequestTemplate requestTemplate/*新请求*/) {
                //1.RequestContextHolder拿到刚进来的这个请求
                ServletRequestAttributes requestAttributes = (ServletRequestAttributes)
                        RequestContextHolder.getRequestAttributes();
                if (requestAttributes!=null){
                    HttpServletRequest request = requestAttributes.getRequest();//老请求
                    if (request != null){
                        //2.同步请求头数据,Cookie
                        String cookie = request.getHeader("Cookie");
                        //给新请求同步了老请求的cookie
                        requestTemplate.header("Cookie",cookie);
                    }
                }
            }
        };
    }
}
